pouwhenua - pole-like weapon
Pouwhenua, poupouwhenua, n. 1. A weapon similar to the taiaha, but terminating in a smooth point in place of the arero. Ka whakatika a Horowhenua ka mau ki te pouwhenua, ka haere (T. 201).
2. A supreme tohunga. ‖ J. iii, 40.
Williams Dictionary